Ivar talks about his current work, some of his latest ideas and his passion. He also reveals why he is wearing pink socks!   Dr. Ivar Jacobson is a father of components and component architecture, use cases, the Unified Modeling Language and the Rational Unified Process.  He has contributed to modern business modeling and aspect-oriented software development. Lately he has been working on a smarter way to deal with methods and tools in a superlight and agile way.  He has developed a practice concept that is now being adopted by both developers and tool vendors. Right now he is working with a team of software leaders with the mission to build a widely-adopted, strong foundation under software engineering, tentatively called Methods Need Theory.   He is the principal author of six influential and best-selling books.